Sylpheed 3.1 Beta 6

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client.
Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users.

Changelog:
* A new option 'Set only mail address when entering recipient from address book' was added.
* The menu items 'Add to recipient/Cc/Bcc' were added to the address book.
* On junk mail filtering, appropriate Junk folder for accounts will be selected.
* When going offline, all current network sessions will be disconnected.
* Low priority will be used for long timeout interval.
* The behavior on opening folders and mark-read timing was modified again.
* The HTML parser was fixed to handle 'a' tag correctly.
* Win32: The text font setting will be checked always on startup (Japanese locale only).
* The Japanese manual was updated.